1. Access your blog Layout > and click on Add a Gadget > HTML/JavaScript > in the section OffCanvas [global].

2. in Content field, insert the following shortcode:  sided-1[recent]
  • change sided-1 with sided-2,  sided-3sided-3_2 
     or slider-8.
  • change recent with random for Random Feed or with any Label Name or with multiple Labels separated by comma.
  • change 5 with the desired number of results.